Rock oil, mineral oil, or natural oil, a dark brown or greenish inflammable liquid, which, at certain points, exists in the upper strata of the earth, from whence it is pumped, or forced by pressure of the gas attending it. It consists of a complex mixture of various hydrocarbons, largely of the methane series, but may vary much in appearance, composition, and properties. It is refined by distillation, and the products include kerosene, benzine, gasoline, paraffin, etc.
A century ago, petroleum - what we call oil - was just an obscure commodity; today it is almost as vital to human existence as water. James Buchan
Important reserves of natural resources, like petroleum and precious metals, are the bulwarks for laying the foundations for the future. Enrique Pena Nieto
I am convinced that Nigeria would have been a more highly developed country without the oil. I wished we'd never smelled the fumes of petroleum. Wole Soyinka
You hear entertainers all the time, saying, 'If I couldn't get paid for this, I'd do it for free.' When's the last time you ever heard a business person say, 'If I couldn't get paid for being chairman of British Petroleum, I'd do it for free'? Dick Gregory
The biodiesel we use is 100 percent, it has no petroleum in it. It was already used in fryers throughout our local area. It's already had one life and now it's going to be used again, which is nice. Daryl Hannah